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Finding the Fourth Proportional to 454.52, 680.06 and 278.87

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Solution

The fourth proportional to 454.52, 680.06 and 278.87 is: 417.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    454.52 : 680.06 = 278.87 : x
  2. Step 2: Convert to fraction form
    454.52/680.06 = 278.87/x
  3. Step 3: Cross multiply
    454.52x = 680.06 × 278.87
  4. Step 4: Simplify right side
    454.52x = 189,648.33
  5. Step 5: Solve for x
    x = 189,648.33/454.52
  6. Step 6: Final answer
    x = 417.25

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.